90° HSS Industrial Quality Countersink
The five flute rose pattern design has been a principle countersink design
for over 100 years. The odd number of flutes reduces chatter on steel, brass and
aluminium. Also used for plastic and wood application.
A common use is to allow the head of a countersunk bolt or screw, when placed
in the hole, to sit flush with or below the surface of the surrounding material.
A countersink may also be used to remove the burr left from a drilling or
tapping operation thereby improving the finish of the product and removing any
hazardous sharp edges.
of the name given to the cutter, the surface being generated may be a conical
chamfer (plunging applications) or a beveled corner for the intersection of two
planes (traversing applications).
A countersink is a conical hole cut into a manufactured object.
The same term is used for the cutter used to cut such a hole.